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Prominent meander in the Raystown Branch near Breezewood. Bedford County, Pennsylvania is situated along the western border of the Ridge and Valley physiographic province, which is characterized by folded and faulted sedimentary rocks of early to middle Paleozoic age.
Hence Blue Mountain is not to be confused with the Blue Ridge Mountains but instead, represents the sharp escarpment, a step in elevation separating the Appalachian Mountains from the pastoral basin famous as the landscape associated with the Pennsylvania Dutch in southern Pennsylvania called the Great Valley A physiographic province, as are ...
Blue Mountain, Blue Mountain Ridge, or the Blue Mountains of Pennsylvania, is a ridge of the Appalachian Mountains in eastern Pennsylvania.Forming the southern and eastern edge of the Ridge-and-Valley Appalachians physiographic province in Pennsylvania, Blue Mountain extends 150 miles (240 km) from the Delaware Water Gap on the New Jersey border in the east to Big Gap in Franklin County in ...
Land added to Laurentia during the Grenville orogeny. The first mountain-building tectonic plate collision that initiated the construction of what are today the Appalachian Mountains occurred during the Mesoproterozoic era at least one billion years ago when the pre-North-American craton called Laurentia collided with other continental segments, notably Amazonia.
Mid-ocean ridge cross-section (cut-away view) A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics.It typically has a depth of about 2,600 meters (8,500 ft) and rises about 2,000 meters (6,600 ft) above the deepest portion of an ocean basin.
The mountain is a core geographic feature throughout much of the Pennsylvania side of the Lehigh Valley. The mountain is called the Reading Prong by geologists. [4] Unlike Blue Mountain to its north, South Mountain does not follow a straight geographic line. The mountain ranges in elevation between 500 and 1,300 feet (150 and 400 m) above sea ...
Mauch Chunk Ridge can be seen in part as the ridgeline in the lower right hand quadrant of this contour map Detail of eastern Pennsylvania. Mauch Chunk Ridge (on older USGS Maps) or Mauch Chunk Mountain is a historically important barrier ridgeline north of the Blue Mountain escarpment and 3rd parallel ridgeline south of the Nesquehoning Creek after Nesquehoning Mountain and Pisgah Ridge [1 ...
Tuscarora quartzite cliff on the west side of North Fork Mountain in West Virginia. The Tuscarora Formation is commonly exposed on various ridge crests and in many water gaps in the Ridge and Valley physiographic province of the Appalachians of Pennsylvania, Maryland, and West Virginia, particularly along the Wills Mountain Anticline.